CN216871467U - A Tidal Range Dynamic Demonstrator for Geography Teaching - Google Patents

Abstract

The utility model discloses a tidal range dynamic demonstration instrument for geography teaching, which comprises an ellipsoid and a base. A mounting opening is opened at the bottom of the ellipsoid, a globe is installed inside the ellipsoid, and a telescopic rod is arranged on the spherical surface of the globe. A ball is installed on the surface of one end away from the globe, a connecting rod is arranged on the spherical surface of the bottom of the globe, and the end of the connecting rod away from the globe is installed on the top surface of the gear through the installation opening. The utility model is a tidal range dynamic demonstration instrument for geography teaching. The multiple relationship between the pinion gear and the inner gear ring is set by the tidal range dynamic demonstration device to restore the actual situation of the movement of the moon and the earth, which is convenient for students to understand the effect of the moon on the tidal effect. Influence; by setting up multiple retractable ranging rods, the intensity of tidal effects at each latitude can be grasped more accurately, and the visualization of tidal effects is more intense.

Description

A tidal range dynamic demonstrator for geography teaching

technical field

The utility model relates to the field of teaching appliances, in particular to a tidal range dynamic demonstration instrument for geography teaching.

Background technique

Tide is a natural phenomenon that occurs in coastal areas. It refers to the periodic movement of seawater under the action of tidal forces of celestial bodies (mainly the moon and the sun). It is also the key content of geography teaching. The tidal ellipsoid display teaching aid is a model in which the water body on the earth's surface in the Earth-Moon system is subjected to tidal forces to form an egg-shaped ellipsoid. The model of the tidal ellipsoid is scaled down according to a certain scale. There is a globe inside the tidal ellipsometer, which is convenient for observing the tidal changes in different locations on the earth, and helps users understand the time and location of the ebb and flow of tides.

At present, the existing tidal display teaching aids are not perfect. The existing patent (publication number: CN113554931A) proposes a tidal range dynamic demonstration instrument suitable for geography teaching. By rotating the handle, the rotation of the globe can be realized, and the rotation can read different Position the height of the tide, so as to understand the dynamic change law of the tidal height. The structure is simple, easy to operate and easy to carry. However, the device ignores the periodic motion of the Earth's tidal ellipsoid, which is not conducive to students' understanding of the relationship between the moon's orbital motion and the Earth's rotational motion.

Utility model content

The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a tidal range dynamic demonstration instrument for geography teaching.

In order to solve the above-mentioned technical problems, the utility model provides the following technical solutions:

The utility model relates to a tidal range dynamic demonstration instrument for geography teaching, which comprises an ellipsoid and a base. An installation opening is opened at the bottom of the ellipsoid, a motor is arranged on the top surface of the base, and the top surface of the rotating shaft of the motor is provided on the top surface of the motor. There is a gear on the top, a chute is opened on the top surface of the base, a cylinder is installed in the chute, an inner gear ring is set on the inner wall surface of the cylinder, and the ellipsoid is installed on the top of the cylinder , a globe is installed inside the ellipsoid, a telescopic rod is provided on the spherical surface of the globe, a ball is installed on the surface of one end of the telescopic rod away from the globe, and a connecting rod is provided on the spherical surface of the bottom of the globe. The end of the connecting rod remote from the globe is mounted on the top surface of the gear through the mounting opening.

As a preferred technical solution of the present invention, a button is provided on the top surface of the base, a battery is provided inside the base, and a controller is provided on the circumferential surface of the bottom of the motor.

As a preferred technical solution of the present invention, the number of the telescopic rods is nine, the balls are rotatably connected to the telescopic rods, and the balls are rollingly connected to the inner wall of the ellipsoid.

As a preferred technical solution of the present invention, the gear and the ring gear are meshed and connected, the perimeter of the ring gear is 27.32 times the perimeter of the gear, and the distance between the connecting rod and the vertical axis of the globe is The included angle between them is 23°26'.

As a preferred technical solution of the present invention, the gear is driven by a motor, the cylinder is slidably connected to the chute, the ellipsoid is fixedly connected to the cylinder, and the connecting rod is fixedly connected to the gear.

As a preferred technical solution of the present invention, both sides of the base are provided with handles, and the ellipsoid is made of colorless and transparent plastic material.

As a preferred technical solution of the present invention, an anti-skid layer is provided on the bottom end surface of the base, and a scale is provided on the circumferential surface of the telescopic rod.

Compared with the prior art, the beneficial effects of the present utility model are as follows:

The utility model is a tidal range dynamic demonstration instrument for geography teaching. The multiple relationship between the pinion gear and the inner gear ring is set by the tidal range dynamic demonstration device to restore the actual situation of the movement of the moon and the earth, which is convenient for students to understand the effect of the moon on the tidal effect. The rotation of the motor is controlled by the motor controller, which is more convenient and quicker than manually turning it; handles are installed on both sides of the base to facilitate the handling of the device; by setting multiple retractable distance measuring rods, it is more accurate It grasps the intensity of tidal action at each latitude, and the visualization of tidal action is more intense, which is easier to inspire students to summarize the rules.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the specification, and are used to explain the present invention together with the embodiments of the present invention, and do not constitute a limitation to the present invention. In the attached image:

Fig. 1 is the overall structure schematic diagram of the present utility model;

Fig. 2 is the overall sectional view of the present utility model;

3 is a partial cross-sectional view of the present utility model;

Fig. 4 is the structure diagram of the telescopic rod of the present invention;

In the figure: 1, ellipsoid; 2, base; 3, installation port; 4, motor; 5, gear; 6, chute; 7, cylinder; 8, ring gear; 9, globe; 10, telescopic rod; 11, ball; 12, connecting rod; 13, button; 14, battery; 15, controller; 16, handle; 17, anti-skid layer; 18, scale.

Detailed ways

The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present utility model, but not to limit the present utility model.

Wherein the same reference numbers in the drawings refer to the same parts throughout.

Example 1

As shown in Figures 1-4, the utility model provides a tidal range dynamic demonstration instrument for geography teaching, comprising an ellipsoid 1 and a base 2, the bottom of the ellipsoid 1 is provided with an installation opening 3, and the top surface of the base 2 is provided with a The motor 4, the top surface of the rotating shaft of the motor 4 is provided with a gear 5, the top surface of the base 2 is provided with a chute 6, a cylinder 7 is installed in the chute 6, and an inner gear ring is provided on the inner wall surface of the cylinder 7 8, the ellipsoid 1 is installed on the top of the cylinder 7, the globe 9 is installed inside the ellipsoid 1, the spherical surface of the globe 9 is provided with a telescopic rod 10, and a ball 11 is installed on the surface of one end of the telescopic rod 10 away from the globe 9, and the globe 9 A connecting rod 12 is arranged on the spherical surface of the bottom of the device, and one end of the connecting rod 12 away from the globe 9 is installed on the top surface of the gear 5 through the installation opening 3 .

Further, a button 13 is arranged on the top surface of the base 2, a battery 14 is arranged inside the base 2, a controller 15 is arranged on the circumferential surface of the bottom of the motor 4, the button 13 is a switch, and the battery 14 is the dynamic demonstration of the tide difference. The instrument provides power, and the controller 15 controls the motor 4 to work.

The number of telescopic rods 10 is nine, the balls 11 are rotatably connected to the telescopic rods 10, the balls 11 are rollingly connected to the inner wall of the ellipsoid 1, and the nine telescopic rods 10 cooperate with the balls 11 to simulate tides and realize the visualization of tides.

The gear 5 is meshed with the ring gear 8, the circumference of the ring gear 8 is 27.32 times the circumference of the gear 5, and the angle between the connecting rod 12 and the vertical axis of the globe 9 is 23°26', 27.32 is the revolution period of the moon, used to simulate the moon's revolving around the earth, and 23°26' is the declination angle of the globe 9 installed, used to simulate the declination angle of the earth's rotation.

The gear 5 is driven by the motor 4 , the cylinder 7 is slidably connected to the chute 6 , the ellipsoid 1 is fixedly connected to the cylinder 7 , and the connecting rod 12 is fixedly connected to the gear 5 .

Both sides of the base 2 are provided with handles 16, the ellipsoid 1 is made of colorless and transparent plastic material, the handle 16 can make the tidal range dynamic demonstration instrument easy to handle, and the ellipsoid 1 of colorless and transparent plastic material is convenient to observe the interior. The operation of the globe 9.

An anti-skid layer 17 is provided on the bottom surface of the base 2, and a scale 18 is provided on the circumferential surface of the telescopic rod 10.

Specifically, a cylindrical body 7 that can rotate and slide along the sliding groove 6 is installed in the chute 6 of the base 1 of the tidal range dynamic demonstration instrument. A motor 4 is provided on the surface of the cylinder 7, and the motor 4 is controlled by the controller 15. The gear 5 of the motor 4 and the inner surface of the cylinder 7 are meshed and connected with the inner gear 8. The globe inside the ellipsoid 1 9 is fixedly connected with the top of the gear 5 through the inclined connecting rod 12, and there are 9 telescopic rods 10 on the surface of the globe 9, and the 9 telescopic rods 10 are respectively arranged at the latitude 10° to the latitude 90° of the latitude gradient of the globe 9 ( Between the equator), and set one every 10°, the end of each telescopic rod 10 away from the globe 9 also has a ball 11 that can roll on the inner wall surface of the ellipsoid 1;

When using the tidal range dynamic demonstration instrument, press the button 13 or input a start command to the controller 15 through the remote control, the controller 15 controls the motor 4 powered by the battery 14 in the base 1 to rotate, and the motor 4 drives the gear 5 to rotate, The gear 5 cooperates with the inner gear 8 meshed with it to drive the cylinder 7 and the ellipsoid 1 fixedly connected to the cylinder 7 to rotate, and at the same time, the gear 5 drives the globe 9 to rotate in the ellipsoid 1 through the connecting rod 12. The circumference of 8 is 27.32 times the circumference of gear 5, so the rotation speed of ellipsoid 1 and globe 9 are different, so as to simulate the effect of the moon's revolution around the earth and the rotation of the earth, and the ball on the end of the telescopic rod 10 on the surface of the globe 9 11 Rolls against the inner wall of the ellipsoid 1. Since the ellipsoid 1 and the globe 9 rotate at different speeds, the lengths of the nine telescopic rods 10 will change with the rotation during the rotation. The ellipsoid 1 can observe the operation of the globe 9 inside, and the scale 18 on each telescopic rod 10. Through the scale 18, the size of the tide at different latitudes in the current state can be obtained, so as to more easily understand the change of the tidal effect.

The utility model is a tidal range dynamic demonstration instrument for geography teaching. The multiple relationship between the pinion gear and the inner gear ring is set by the tidal range dynamic demonstration device to restore the actual situation of the movement of the moon and the earth, which is convenient for students to understand the effect of the moon on the tidal effect. The rotation of the motor is controlled by the motor controller, which is more convenient and quicker than manually turning it; handles are installed on both sides of the base to facilitate the handling of the device; by setting multiple retractable distance measuring rods, it is more accurate It grasps the intensity of tidal action at each latitude, and the visualization of tidal action is more intense, which is easier to inspire students to summarize the rules.

Finally, it should be noted that the above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. , it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements to some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (7)

1. The tidal range dynamic demonstrator for geography teaching is characterized by comprising an ellipsoid body (1) and a base (2), wherein a mounting opening (3) is formed in the bottom of the ellipsoid body (1), a motor (4) is arranged on the surface of the top end of the base (2), a gear (5) is arranged on the surface of the top end of a rotating shaft of the motor (4), a sliding groove (6) is formed in the surface of the top end of the base (2), a barrel body (7) is installed in the sliding groove (6), an inner wall surface of the barrel body (7) is provided with an inner gear ring (8), the ellipsoid body (1) is installed at the top of the barrel body (7), a globe (9) is installed inside the ellipsoid body (1), a telescopic rod (10) is arranged on the spherical surface of the globe (9), and a ball (11) is installed on the surface of one end, far away from the globe (9), of the telescopic rod (10), a connecting rod (12) is arranged on the spherical surface of the bottom of the globe (9), and one end, far away from the globe (9), of the connecting rod (12) penetrates through the mounting hole (3) to be mounted on the top end surface of the gear (5).

2. A tidal range dynamic demonstrator for geography teaching according to claim 1, wherein a button (13) is arranged on the top surface of the base (2), a battery (14) is arranged inside the base (2), and a controller (15) is arranged on the circumferential surface of the bottom of the motor (4).

3. The tidal range dynamic demonstrator for geography teaching according to claim 1, wherein the number of the telescopic rods (10) is nine, the balls (11) are rotatably connected with the telescopic rods (10), and the balls (11) are in rolling connection with the inner wall of the ellipsoid (1).

4. The tidal range dynamic demonstrator for geography teaching according to claim 1, wherein the gear (5) is in meshed connection with an inner gear ring (8), the circumference of the inner gear ring (8) is 27.32 times of the circumference of the gear (5), and the included angle between the connecting rod (12) and the vertical axis of the globe (9) is 23 degrees and 26 degrees.

5. The tidal range dynamic demonstrator for geography teaching according to claim 1, wherein the gear (5) is driven by a motor (4), the cylinder (7) is slidably connected with the sliding groove (6), the ellipsoid (1) is fixedly connected with the cylinder (7), and the connecting rod (12) is fixedly connected with the gear (5).

6. The tidal range dynamic demonstrator for geography teaching according to claim 1, wherein the two side surfaces of the base (2) are provided with handles (16), and the ellipsoid (1) is made of colorless transparent plastic material.

7. The tidal range dynamic demonstrator for geography teaching according to claim 1, wherein an anti-slip layer (17) is arranged on the bottom surface of the base (2), and scales (18) are arranged on the circumferential surface of the telescopic rod (10).

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